Bug that allowed stolen iPhones to continue receiving iMessages has been fixed in iOS 6

Earlier this year a series of stories exposed an odd bug in Apple’s iOS software that allowed stolen iPhones to continue receiving iMessage messages, even if the SIM was deactivated and password changed. Now, we have learned that the bug has been rectified as of Apple’s release of iOS 6 in September.

According to a source with knowledge of Apple’s steps to correct the matter, the issue has been fixed in iOS 6 through a variety of checks placed on iMessage. The most important of these is that Apple now uses its push systems to force a user to re-enter a password to use iMessage once your Apple ID credentials have been changed.

This means that, if your phone is stolen, you can change your Apple ID password and all of your devices will require that password to be re-entered before anyone can use iMessage on it.

In addition, placing your SIM in a new phone with the same number associated or wiping your phone with Find My iPhone will now disable your stolen device from receiving iMessages. Both of those were common fixes that appeared not to work for many customers under iOS 5.

While there was quite a flurry of reports about this issue earlier this year, it appeared to have calmed down significantly over the intervening months. The new information that we received seems to indicate that, though it was a real issue, it has now been resolved.